STW81200 datasheet(48/58 Pages) STMICROELECTRONICS

номер детали	STW81200

подробное описание детали	Wideband RF PLL fractional/integer frequency synthesizer with integrated VCOs and LDOs

PDF	58 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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48 / 58 page

Circuit description

STW81200

48/58

DocID025943 Rev 7

ST10 Register

Address:

STW81200BaseAddress + 0x0A

Type:

Description:

VCO, Lock det. Status, LDO status

RRRR

RRR

[26:18]

RESERVED: fixed to ‘0’

[17]

REG_DIG_STARTUP: DIGITAL regulator ramp-up indicator (‘1’ means correct start-up)

[16]

REG_REF_STARTUP: REFERENCE CLOCK regulator ramp-up indicator (‘1’ means correct start-up)

[15]

REG_RF_STARTUP: RF Output section regulator ramp-up indicator (‘1’ means correct start-up)

[14]

REG_VCO_STARTUP: VCO bias-and-control regulator ramp-up indicator (‘1’ means correct start-up)

[13]

REG_VCO_4V5_STARTUP: High-voltage regulator ramp-up indicator (‘1’ means correct start-up)

[12]

REG_DIG_OCP: DIGITAL regulator over-current protection indicator (‘1’ means over-current detected)

[11]

REG_REF_OCP: REFERENCE CLOCK regulator over-current protection indicator (‘1’ means over-

current detected)

[10]

REG_RF_OCP: RF Output section regulator over-current protection indicator (‘1’ means over-current

detected)

[9]

REG_VCO_OCP: VCO Bias and

Control regulator over-current protection indicator (‘1’ means over-current detected)

[8]

REG_VCO_4V5_OCP: High Voltage regulator over-current protection indicator (‘1’ means over-current

detected)

[7]

LOCK_DET: Lock detector status bit (‘1’ means PLL locked)

[6:5]

VCO_SEL: VCO selected by Calibration algorithm

00: (0) VCO_HIGH

01: (1) VCO_LOW

10: (2) VCO_MID

11: (3) VCO_LOW

[4:0]

WORD: specific VCO sub-band selected by Calibration algorithm (Range:0 to 31)

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